Comunication between 12F683 & 16F84A with serin2/serout2

[kklim29]

I'm working on a project which need to send data from 12F683 to 16F84A. I'm using a 4MHz crystal on 84A & configure 683 to use internal 4MHz clock. I can see 12F683 is sending data out with a scope but 16F84A is not responding (data no showing in 16X2 LCD). It work when I replace 12F683 with 16F84A.

12F683 code:
SEROUT2 GPIO.5,813 ["A", tmp]

16F84A code:
serin2 PORT5.4,813,[WAIT("A"),dec CONT2]

Anyone know what's the problem? Thanks.